One Piece Episode 243, "CP9 Unmasked! Their Shocking True Faces," features a pivotal Water 7 arc moment where undercover agents Rob Lucci, Kaku, Kalifa, and Blueno reveal their true identities to Iceburg. The episode centers on the betrayal of the Galley-La shipwrights and the hunt for the Pluton blueprints, shifting the series into a high-stakes thriller. Detailed episode information can be found at One Piece Wiki . Episode 243 | One Piece Wiki | Fandom